The ratio of positive to negative emotions that predicts flourishing is about 3 to 1. Above that ratio, people tend to flourish; below it, they tend to languish.

The reason that the invisible hand often seems invisible is that it is often not there.

如果你希望成功，当以恒心为良友、以经验为参谋、以谨慎为兄弟、以希望为哨兵。

如果有人给你提供了一个绝佳的机会，但你不确定自己能否做到，那就答应——然后再学习如何去做！

The most important thing is to have a vision of what you want to do and then to have the persistence to carry it out.